IR – wide flange (ASTM A6 W)

IR 310x117

Standard: ASTM A6 / IMCASource: SI values from the AISC v16.0 database
IR designation built from the metric W; cross-check with the IMCA Manual.
xybf = 307d = 315tf = 18.7tf = 18.7tw = 11.9tw = 11.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
315mm
Flange widthbf
307mm
Web thicknesstw
11.9mm
Flange thicknesstf
18.7mm
Distance k (design)kdes
33.8mm
Distance k (detailing)kdet
41.3mm
Distance k1k1
27mm
Web clear depthT
232mm
Distance between flange centroidsho
297mm

Mass and area

Mass per lengthm
117kg/m
Cross-sectional areaA
15,000mm²

Strong axis x–x

Moment of inertiaIx
27610⁶ mm⁴
Elastic section modulusSx
1,75010³ mm³
Plastic section modulusZx
1,95010³ mm³
Radius of gyrationrx
136mm

Weak axis y–y

Moment of inertiaIy
89.910⁶ mm⁴
Elastic section modulusSy
58710³ mm³
Plastic section modulusZy
89010³ mm³
Radius of gyrationry
77.5mm

Torsion and stability

Torsional constantJ
1,60010³ mm⁴
Warping constantCw
1,97010⁹ mm⁶
Effective radius of gyrationrts
87.1mm

Slenderness ratios

Flange slendernessbf/2tf
8.22
Web slendernessh/tw
20.7

Equivalents in other standards